Figure 3From: Duplicated Hox genes in the spider Cupiennius salei Expression pattern of the Cs-Dfd-1 and Cs-Dfd-2 genes. The Cs-Dfd-1 gene (A-C) and the Cs-Dfd-2 gene (D-F) are expressed in the four segments that bear the walking legs (L1-L4). Expression is seen in the appendages as well as in the ventral ectoderm. The ventral ectoderm expression of Cs-Dfd-1 is stronger than the one of Cs-Dfd-2, especially at the older stages (B and C compared with E and F). The expression patterns in the legs are different for the two genes (most obvious in C an F), while in addition, Cs-Dfd-2 expression in L3 and L4 is weaker compared to the expression in L1 and L2. The level of Cs-Dfd-1 expression is similar for all four legs. A and D: ventral view of limb bud stage, B and E: ventral view of limb stage before inversion, C and F: lateral view of inversion stage. There is never ever expression of any of the two spider Dfd genes in the cheliceral (Ch), pedipalpal (Pp), or opisthosomal segments.Back to article page